diff --git a/matlab/TCV/gdat_tcv.m b/matlab/TCV/gdat_tcv.m
index 765b325b7cc6280af21630157bbe461d9c0d51f6..277090f7bbccad3edc115b5a0186b4a0255c65c0 100644
--- a/matlab/TCV/gdat_tcv.m
+++ b/matlab/TCV/gdat_tcv.m
@@ -2529,7 +2529,7 @@ elseif strcmp(mapping_for_tcv.method,'switchcase')
         gdat_data.nbi.t=gdat_data.nbi.dim{1};
         gdat_data.nbi.x=[];
         gdat_data.nbi.data_fullpath=[nodenameeff];
-        gdat_data.nbi.label='P_{nb2}';
+        gdat_data.nbi.label='P_{nbi2}';
         gdat_data.nbi.help = nb2_data_tdi.help;
         nodenameeff2 = '\results::nb2:energy';
         gdat_data.nbi.data_fullpath=[nodenameeff ' *1e6 for W; and ' nodenameeff2 ' *1e3 for eV'];